Senior Backend Engineer

Summary

Join Mozilla's growing Ads product team as a Senior Software Engineer and participate in the development of privacy-preserving ad technology. You will design, build, and own core backend systems supporting advertising in Mozilla products like Firefox and Pocket. Leverage your product strategy understanding to deliver on key projects, mentor junior engineers, and serve as a go-to resource for the ad stack. This role requires 4+ years of software engineering experience, proven success in leading large projects, and experience with backend systems at scale. Familiarity with Golang, Rust, or Java is essential, along with strong communication skills. Bonus points for experience in data privacy and digital advertising.

Requirements

• 4+ years of overall software engineering experience
• Proven ability to successfully lead and ship large software projects with speed and quality
• Experience in working on complex backend systems at scale
• Experience in one of the following technologies: Golang, Rust, or Java
• An interest and ability to work in a distributed team (which requires good asynchronous written communication skills as well as good verbal communication skills)
• Commitment to our values: Welcoming differences
• Being relationship-minded
• Practicing responsible participation
• Having grit

Responsibilities

• Participate in development of industry leading privacy preserving ad technology
• Leverage your understanding of product strategy to break down and deliver on key projects on our roadmap
• Mentor others by stewarding some of your responsibilities to more junior engineers
• Be a go-to resource for Mozilla’s ad stack to peers in partner teams

Preferred Qualifications

• Experience in data privacy
• Experience in digital advertising or advertising platforms

Benefits

• Generous performance-based bonus plans to all eligible employees - we share in our success as one team
• Rich medical, dental, and vision coverage
• Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
• Quarterly all-company wellness days where everyone takes a pause together
• Country specific holidays plus a day off for your birthday
• One-time home office stipend
• Annual professional development budget
• Quarterly well-being stipend
• Considerable paid parental leave
• Employee referral bonus program
• Other benefits (life/AD&D, disability, EAP, etc. - varies by country)